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The purpose of this study is to collect clinical specimens and corresponding clinical data to develop a non-invasive test for detection of intra-amniotic infection and prediction of preterm birth in women and intact amniotic membranes. The specimens collected will be used to develop a specific biomarker panel and algorithm using immunoassays for optimal detection of intra-amniotic infection in women with preterm labor and intact amniotic membranes.

Condition or disease

Intra-amniotic Infection

Detailed Description:

Intra-amniotic infection (IAI) is an acute bacterial infection of the amniotic fluid and intrauterine contents during pregnancy and occurs in 4% to 10% of all deliveries (Newton, ER., 1993. Newton, ER, et al., 1989. Soper, DE, et al., 1989). IAI is an important cause of maternal and neonatal morbidity. Identifying and appropriately treating women with IAI is, therefore, a major obstetrical challenge.

Intrauterine infection may occur early in pregnancy and remain undetected for a prolonged period, thus exposing the fetus to the effects of infection/inflammation for a considerable period. Ideally, an early diagnosis of IAI is important to allow timely treatment and intervention. Unfortunately, the early diagnosis is difficult because the clinical signs and symptoms of IAI may occur late in the course of the infection and are neither sensitive nor specific. Therefore, to avoid a delay in diagnosis a high degree of suspicion and the appropriate use of adjunctive laboratory tests are warranted.

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Ages Eligible for Study:

18 Years and older (Adult, Senior)

Sexes Eligible for Study:

Female

Accepts Healthy Volunteers:

No

Sampling Method:

Non-Probability Sample

Study Population

Women presenting to labor and delivery with signs and symptoms of preterm labor and documented intact amntiotic membranes

Criteria

Inclusion Criteria:

Subject is greater than or equal to 18 years of age

Subject has singleton gestation

Subject has fetus with gestational age greater than or equal to 22 0/7 weeks and less than or equal to 36 6/7 weeks

Subject has documented intact amniotic membranes

Subject's care provider plans to or has performed an amniocentesis procedure

Subject has had evidence of spontaneous preterm labor as evidenced by documented regular uterine contractions (greater than or equal to four per hour, or if less than 26 weeks gestation, cramping or backache) and one or more of the following:

Progressive cervical change with cervical dilation of greater than or equal to 2 cm

Effacement of greater than or equal to 50%

Cervical length of less than or equal to 30 mm via transvaginal ultrasound